133505263250 has 32 divisors (see below), whose sum is σ = 250710398640. Its totient is φ = 53233612800.

The previous prime is 133505263217. The next prime is 133505263259. The reversal of 133505263250 is 52362505331.

It can be written as a sum of positive squares in 8 ways, for example, as 44368921 + 133460894329 = 6661^2 + 365323^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133505263250.

It is not an unprimeable number, because it can be changed into a prime (133505263259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763055 + ... + 921554.

Almost surely, 2^133505263250 is an apocalyptic number.

133505263250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133505263250 is a deficient number, since it is larger than the sum of its proper divisors (117205135390).

133505263250 is a wasteful number, since it uses less digits than its factorization.

133505263250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684943 (or 1684933 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 35.

Adding to 133505263250 its reverse (52362505331), we get a palindrome (185867768581).

The spelling of 133505263250 in words is "one hundred thirty-three billion, five hundred five million, two hundred sixty-three thousand, two hundred fifty".